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United States Patent | 5,204,178 |
Licht ,   et al. | April 20, 1993 |
Novel (meth)acrylate copolymers which contain, as polymerized units, A) one or more (meth)acrylates and/or (meth)acrylamides having second order nonlinear optical properties and of the general formula I ##STR1## where R is hydrogen or methyl, X is a flexible spacer, which may or may not be present, Y is a divalent group having electron donor activity and Z is a noncentrosymmetric radical containing an easily polarizable conjugated .pi.-electron system and one or more electron acceptor groups, and B) one or more (meth)acrylates of alkanols where the alkyl radical is of 10 to 30 carbon atoms in a molar ratio of (A) to (B) of from 1:0.5 to 1:5 are very suitable as nonlinear optical materials for nonlinear optical arrangements and for the production of Langmuir-Blodgett films. The novel (meth)acrylate copolymers which contain terminal nitro, trifluoromethyl, cyano or fulven-6-yl groups as electron acceptors and have molar ratios A to B differing from those mentioned above are also suitable for intended uses outside nonlinear optics.
Inventors: | Licht; Ulrike (Mannheim, DE); Fuchs; Harald (Carlsberg, DE); Funhoff; Dirk (Heidelberg, DE); Schrepp; Wolfgang (Heidelberg, DE); Schupp; Hans (Worms, DE) |
Assignee: | BASF Aktiengesellschaft (Ludwigshafen, DE) |
Appl. No.: | 784427 |
Filed: | November 12, 1991 |
PCT Filed: | May 30, 1990 |
PCT NO: | PCT/EP90/00866 |
371 Date: | November 12, 1991 |
102(e) Date: | November 12, 1991 |
PCT PUB.NO.: | WO90/15087 |
PCT PUB. Date: | December 13, 1990 |
Jun 02, 1989[DE] | 3918016 |
Current U.S. Class: | 428/333; 427/434.3; 428/411.1; 526/245; 526/263; 526/298; 526/304; 526/309; 526/311 |
Intern'l Class: | B32B 027/30 |
Field of Search: | 526/311,245,304,298,263 428/333,411.1,64 427/434.3 |
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